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Commit bec2c48c authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

x86: Add BITS to allow simple Makefile sharing 



Preperatory patch to simplify the sharing of Makefiles in
arch/x86.

Linus came up with this during a discussion about the ugliness of
ifeq($CONFIG_X86_32),y) and obj-$(CONFIG_X86_32) in the shared
Makefiles.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 428c5a23

arch/i386/Makefile

+6 −0
Original line number Diff line number Diff line
@@ -20,6 +20,12 @@ 
# Fill in SRCARCH

SRCARCH	:= x86



# BITS is used as extension for files which are available in a 32 bit

# and a 64 bit version to simplify shared Makefiles.

# e.g.: obj-y += foo_$(BITS).o

BITS := 32

export BITS



HAS_BIARCH      := $(call cc-option-yn, -m32)

ifeq ($(HAS_BIARCH),y)

AS              := $(AS) --32

arch/x86_64/Makefile

+6 −0
Original line number Diff line number Diff line
@@ -24,6 +24,12 @@ 
# Fill in SRCARCH

SRCARCH	:= x86



# BITS is used as extension for files which are available in a 32 bit

# and a 64 bit version to simplify shared Makefiles.

# e.g.: obj-y += foo_$(BITS).o

BITS := 64

export BITS



LDFLAGS		:= -m elf_x86_64

OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S

LDFLAGS_vmlinux :=